1125443489 has 2 divisors, whose sum is σ = 1125443490. Its totient is φ = 1125443488.

The previous prime is 1125443471. The next prime is 1125443531. The reversal of 1125443489 is 9843445211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1102240000 + 23203489 = 33200^2 + 4817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125443489 - 2⁸ = 1125443233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125443089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562721744 + 562721745.

It is an arithmetic number, because the mean of its divisors is an integer number (562721745).

Almost surely, 2^1125443489 is an apocalyptic number.

It is an amenable number.

1125443489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125443489 is an equidigital number, since it uses as much as digits as its factorization.

1125443489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 1125443489 is about 33547.6301547516. The cubic root of 1125443489 is about 1040.1785593929.

The spelling of 1125443489 in words is "one billion, one hundred twenty-five million, four hundred forty-three thousand, four hundred eighty-nine".